Administrator Guide
request to the secondary volume, the secondary Storage Center forwards the IO request to the primary volume on the primary Storage
Center.
Live Volume Before Swap Role
In the following diagram, the primary Storage Center is on the left and the secondary Storage Center is on the right.
Figure 58. Example Live Volume
Conguration
1 Server 2 Server IO request to primary volume over Fibre Channel or
iSCSI
3 Primary volume 4 Live Volume replication over Fibre Channel or iSCSI
5 Secondary volume 6 Server IO request to secondary volume (forwarded to
primary Storage Center by secondary Storage Center)
7 Server
Live Volume After Swap Role
In the following diagram, a role swap has occurred so the secondary Storage Center is on the left and the primary Storage Center is on the
right.
Figure 59. Example Live Volume Conguration After Swap Role
1
Server 2 Server IO request to secondary volume (forwarded to
primary Storage Center by secondary Storage Center)
3 Secondary volume 4 Live Volume replication over Fibre Channel or iSCSI
5 Primary volume 6 Server IO request to primary volume over Fibre Channel or
iSCSI
7 Server
Storage Center Replications and Live Volumes 547